<p>EAST TO USE: The hearing aid comes with a larger volume control (VC), so if your fingers nimble enough, just put your finger on it to adjust manually, do not need extra tools to adjust and handle the small volume trimmer, much easier to useadjusting the volume to avoid sudden increases in sound and allowing you to focus on what you want to hear. Of course you can also use the hearing aid cleaning brush to adjust the volumeMINI HEARING AIDS: The hearing amplifier to aid and assist for mild to moderate hearing loss, not hyperacusis and severe loss, suitable elderly and adults magicear impaired, without any annoying feedback or whistlingLONG LASTING BATTERY LIFE: Rechargeable hearing amplifiers are good and all but they are still larger and bulkier. Our hearing amplifiers are even 20% smaller than others and you'll be able to use our hearing amplifiers for an extended period of time without having to worry about the batteries running out. When it does run out, you can easily replace them with common easy to find A10 batteries. Through normal use batteries will last between four daysSUITABLE FOR VARIOUS ENVIRONMENT: The hearing aid can be applied to watching television and outdoor scenes like take a walk for walker in a park and busy area, The earing listener is also suit for hunters. This ear amplifier hearing aids are a good choice for your parents and friendsINVISIBLE DESIGNED: This hearing aids are small, discreet and mini enough to be invisible in the ear canal and work with size 10 batteries, The hearing aid use advance programmable enhancer technology provides high quality natural sound, it is less sensitive to wind and noise, and you will be able to easily use your phone with comfort and ease</p>